/Engine/Source/Runtime/GeometryCore/Public/Parameterization/IncrementalMeshDijkstra.h
FSeedPointdefines a seed point passed to the various compute methods below
struct FSeedPoint
int32
ExternalID
Client-defined integer ID for this seed point (not used internally)
int32
PointID
Point ID for this seed point, must be a valid point ID in the input PointSet
double
StartDistance
Initial distance for this seed point